1Code.dev

Best UI for Claude Code with local and remote agent execution.

By 21st.dev team

Platforms: macOS, Linux, and Windows. Windows support improved thanks to community contributions from @jesus-mgtc and @evgyur.

Run agents locally, in worktrees, in background — without touching main branch.

• Git Worktree Isolation - Each chat session runs in its own isolated worktree
• Background Execution - Run agents in background while you continue working
• Local-first - All code stays on your machine, no cloud sync required
• Branch Safety - Never accidentally commit to main branch

Cursor-like UI for Claude Code with diff previews, built-in git client, and the ability to see changes before they land.

• Diff Previews - See exactly what changes Claude is making in real-time
• Built-in Git Client - Stage, commit, and manage branches without leaving the app
• Change Tracking - Visual diffs and PR management
• Real-time Tool Execution - See bash commands, file edits, and web searches as they happen

Claude asks clarifying questions, builds structured plans, and shows clean markdown preview — all before execution.

• Clarifying Questions - Claude asks what it needs to know before starting
• Structured Plans - See step-by-step breakdown of what will happen
• Clean Markdown Preview - Review plans in readable format
• Review Before Execution - Approve or modify the plan before Claude acts

• Plan & Agent Modes - Read-only analysis or full code execution permissions
• Project Management - Link local folders with automatic Git remote detection
• Integrated Terminal - Full terminal access within the app

• Bun - JavaScript runtime
• Python - Required for Claude Code
• Xcode Command Line Tools (macOS only)
• Claude CLI - System claude binary must be installed and available in PATH

bun install
bun run build
bun run package:mac  # or package:win, package:linux

Important: Ensure the claude CLI binary is installed system-wide and available in your PATH. The app will use the system claude binary instead of bundling its own.

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bun install
bun run dev

Note: Make sure the claude CLI binary is installed system-wide and available in your PATH.

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Apache License 2.0 - see LICENSE for details.